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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef ASH_COMMON_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_ | |
6 #define ASH_COMMON_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "ash/ash_export.h" | |
11 #include "ash/common/shelf/shelf_background_animator_observer.h" | |
12 #include "ash/common/system/tray/actionable_view.h" | |
13 #include "ash/public/cpp/shelf_types.h" | |
14 #include "base/macros.h" | |
15 #include "ui/compositor/layer_animation_observer.h" | |
16 #include "ui/gfx/geometry/insets.h" | |
17 #include "ui/views/bubble/tray_bubble_view.h" | |
18 | |
19 namespace ash { | |
20 class TrayEventFilter; | |
21 class TrayBackground; | |
22 class WmShelf; | |
23 | |
24 // Base class for children of StatusAreaWidget: SystemTray, WebNotificationTray, | |
25 // LogoutButtonTray, OverviewButtonTray. | |
26 // This class handles setting and animating the background when the Launcher | |
27 // is shown/hidden. It also inherits from ActionableView so that the tray | |
28 // items can override PerformAction when clicked on. | |
29 class ASH_EXPORT TrayBackgroundView : public ActionableView, | |
30 public ui::ImplicitAnimationObserver, | |
31 public ShelfBackgroundAnimatorObserver { | |
32 public: | |
33 static const char kViewClassName[]; | |
34 | |
35 // Base class for tray containers. Sets the border and layout. The container | |
36 // auto-resizes the widget when necessary. | |
37 class TrayContainer : public views::View { | |
38 public: | |
39 explicit TrayContainer(ShelfAlignment alignment); | |
40 ~TrayContainer() override {} | |
41 | |
42 void SetAlignment(ShelfAlignment alignment); | |
43 | |
44 void SetMargin(int main_axis_margin, int cross_axis_margin); | |
45 | |
46 protected: | |
47 // views::View: | |
48 void ChildPreferredSizeChanged(views::View* child) override; | |
49 void ChildVisibilityChanged(View* child) override; | |
50 void ViewHierarchyChanged( | |
51 const ViewHierarchyChangedDetails& details) override; | |
52 | |
53 private: | |
54 void UpdateLayout(); | |
55 | |
56 ShelfAlignment alignment_; | |
57 int main_axis_margin_ = 0; | |
58 int cross_axis_margin_ = 0; | |
59 | |
60 DISALLOW_COPY_AND_ASSIGN(TrayContainer); | |
61 }; | |
62 | |
63 explicit TrayBackgroundView(WmShelf* wm_shelf); | |
64 ~TrayBackgroundView() override; | |
65 | |
66 // Called after the tray has been added to the widget containing it. | |
67 virtual void Initialize(); | |
68 | |
69 // Initializes animations for the bubble. | |
70 static void InitializeBubbleAnimations(views::Widget* bubble_widget); | |
71 | |
72 // views::View: | |
73 void SetVisible(bool visible) override; | |
74 const char* GetClassName() const override; | |
75 void ChildPreferredSizeChanged(views::View* child) override; | |
76 void GetAccessibleNodeData(ui::AXNodeData* node_data) override; | |
77 void AboutToRequestFocusFromTabTraversal(bool reverse) override; | |
78 void OnPaint(gfx::Canvas* canvas) override; | |
79 | |
80 // ActionableView: | |
81 std::unique_ptr<views::InkDropRipple> CreateInkDropRipple() const override; | |
82 std::unique_ptr<views::InkDropHighlight> CreateInkDropHighlight() | |
83 const override; | |
84 void OnGestureEvent(ui::GestureEvent* event) override; | |
85 | |
86 // Called whenever the shelf alignment changes. | |
87 virtual void SetShelfAlignment(ShelfAlignment alignment); | |
88 | |
89 // Called when the anchor (tray or bubble) may have moved or changed. | |
90 virtual void AnchorUpdated() {} | |
91 | |
92 // Called from GetAccessibleNodeData, must return a valid accessible name. | |
93 virtual base::string16 GetAccessibleNameForTray() = 0; | |
94 | |
95 // Called when the bubble is resized. | |
96 virtual void BubbleResized(const views::TrayBubbleView* bubble_view) {} | |
97 | |
98 // Hides the bubble associated with |bubble_view|. Called when the widget | |
99 // is closed. | |
100 virtual void HideBubbleWithView(const views::TrayBubbleView* bubble_view) = 0; | |
101 | |
102 // Called by the bubble wrapper when a click event occurs outside the bubble. | |
103 // May close the bubble. | |
104 virtual void ClickedOutsideBubble() = 0; | |
105 | |
106 // Sets |contents| as a child. | |
107 void SetContents(views::View* contents); | |
108 | |
109 // Creates and sets contents background to |background_|. |draws_active| | |
110 // determines if the view's background should be drawn as active when the view | |
111 // is in the active state. | |
112 void SetContentsBackground(bool draws_active); | |
113 | |
114 // Returns the bubble anchor alignment based on |shelf_alignment_|. | |
115 views::TrayBubbleView::AnchorAlignment GetAnchorAlignment() const; | |
116 | |
117 void SetIsActive(bool is_active); | |
118 bool is_active() const { return is_active_; } | |
119 | |
120 TrayContainer* tray_container() const { return tray_container_; } | |
121 ShelfAlignment shelf_alignment() const { return shelf_alignment_; } | |
122 TrayEventFilter* tray_event_filter() { return tray_event_filter_.get(); } | |
123 WmShelf* shelf() { return wm_shelf_; } | |
124 | |
125 // Updates the arrow visibility based on the launcher visibility. | |
126 void UpdateBubbleViewArrow(views::TrayBubbleView* bubble_view); | |
127 | |
128 // ShelfBackgroundAnimatorObserver: | |
129 void UpdateShelfItemBackground(SkColor color) override; | |
130 | |
131 // Updates the visibility of this tray's separator. | |
132 void set_separator_visibility(bool visible) { separator_visible_ = visible; } | |
133 | |
134 // Gets the anchor for bubbles, which is tray_container(). | |
135 views::View* GetBubbleAnchor() const; | |
136 | |
137 // Gets additional insets for positioning bubbles relative to | |
138 // tray_container(). | |
139 gfx::Insets GetBubbleAnchorInsets() const; | |
140 | |
141 protected: | |
142 // ActionableView: | |
143 std::unique_ptr<views::InkDropMask> CreateInkDropMask() const override; | |
144 bool ShouldEnterPushedState(const ui::Event& event) override; | |
145 bool PerformAction(const ui::Event& event) override; | |
146 void HandlePerformActionResult(bool action_performed, | |
147 const ui::Event& event) override; | |
148 void OnPaintFocus(gfx::Canvas* canvas) override; | |
149 | |
150 private: | |
151 class TrayWidgetObserver; | |
152 | |
153 // ui::ImplicitAnimationObserver: | |
154 void OnImplicitAnimationsCompleted() override; | |
155 bool RequiresNotificationWhenAnimatorDestroyed() const override; | |
156 | |
157 // Applies transformations to the |layer()| to animate the view when | |
158 // SetVisible(false) is called. | |
159 void HideTransformation(); | |
160 | |
161 // Helper function that calculates background insets relative to local bounds. | |
162 gfx::Insets GetBackgroundInsets() const; | |
163 | |
164 // Helper function that calculates background bounds relative to local bounds | |
165 // based on background insets returned from GetBackgroundInsets(). | |
166 gfx::Rect GetBackgroundBounds() const; | |
167 | |
168 // The shelf containing the system tray for this view. | |
169 WmShelf* wm_shelf_; | |
170 | |
171 // Convenience pointer to the contents view. | |
172 TrayContainer* tray_container_; | |
173 | |
174 // Shelf alignment. | |
175 // TODO(jamescook): Don't cache this, get it from WmShelf. | |
176 ShelfAlignment shelf_alignment_; | |
177 | |
178 // Owned by the view passed to SetContents(). | |
179 TrayBackground* background_; | |
180 | |
181 // Determines if the view is active. This changes how the background is drawn | |
182 // in non-MD version and how the ink drop ripples behave in MD version. | |
183 bool is_active_; | |
184 | |
185 // Visibility of this tray's separator which is a line of 1x32px and 4px to | |
186 // right of tray. | |
187 bool separator_visible_; | |
188 | |
189 std::unique_ptr<TrayWidgetObserver> widget_observer_; | |
190 std::unique_ptr<TrayEventFilter> tray_event_filter_; | |
191 | |
192 DISALLOW_COPY_AND_ASSIGN(TrayBackgroundView); | |
193 }; | |
194 | |
195 } // namespace ash | |
196 | |
197 #endif // ASH_COMMON_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_ | |
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